Improvement in adjustable templets



SSheet'v-Sheet 1. N. JENKINS; I Adjustable-Templates.

I Fatented D ec.1,1874.

TFE GRAPHIC CO PHOT0UTH.39& I! PARK PLACE, FLY.

3 Sheets--S heet 2.

N. Adjustable-Templates.

JENKINS.

- Pat'nped Dec. 1, 1874.

THE GRAPHIC COJHOYO-LITKS PARK 3 sheets Sfieet 3.

JENKINS. AdiustabIe-Te mplates.

Pa te-nted Dec. 1,1874.

UNITED STATES PATENT OFFICE.

NICHOLAS JENKINS, OF NEW HAVEN, CONNECTICUT.

IMPROVEMENT IN ADJUSTABLE T EMPLETS.

Specification forming part of Letters Patent No. 157,288, dated December1, 1874 application filed November 11, 1874.

To all whom it may concern:

Be it known that I, NICHOLAS JENKINS, of New Haven, in the State ofConnecticut, have invented certain Improvements Relating to AdjustableTemplets, of which the following is a specification:

The device is adapted for use in the woodworking machines described informer patents to me, and also in other wood-working machines,technically known as paneling, shaping, variety-molding, 8220.

It consists in certain improvements, more especially set forthhereafter, on the invention set forth in my patent dated July 12,antedated June 29, 1870.

This device gives a great range of sizes by providing means for readilymaking interme diate sizes. It allows one length of the longitudinalbars to serve for various lengths of templet, and it also provides formoreconveniently throwing the removable piecesout of or into play.

1 have also devised improved clampin g means, which hold the wood to thetemplet.

The accompanying drawings form a part of this specification.

Figure l is a plan view. Fig. 2 is a side view, partly in section; andFig. 3 is an end view, partly in section. Fig. 4. is a longitudinalsection across the principal clamps, and an elevation of thesupporting-board and the subclamps employed thereon as a holding meansfor the Wood. Fig. 5 is a plan view of the supporting-board andholding-clamps detached from the other parts, with a piece of woodproperly held therein.

Similar letters of reference indicate corre sponding parts in all thefigures.

Referring to the drawings, A is the movable table of the machine. B Bare stands, secured thereon by being adjusted in grooves a. They supportcross pieces or bars B, which are formed each with a narrow planesurface on the top, and with a considerably depressed surface, balongside, in which is a T-section groove, 12. The under faces of thecross-bars B receive the pressure of the wood which is to be treated.The wood is to be forced upward against it by clamps actuated frombelow, as will be explained hereafter. Shoes K are adapted to beadjusted in various positions on the depressed portions b being fixed inany position thereon by means of pinching-screws k. The upper surface ofeach shoe K is flush with the elevated part of the cross-bar. Bothreceive and support longitudinal bars E, which overhang or extend beyondthe cross-bars when the latter are adjusted near together. The bars Eare secured to the shoes K by the aid of connecting-pieces E, which fitover an elevated rib on the bar, and are set in the desired positions bymeans of pinching-screws c. The connecting-pieces E overhang inwardly,and the under surface of the overhanging part of each has a hole, whichmatches upon a pin, k, in the corresponding shoe.

The cross-bars B are intended to be graduated on their upper surface, tofacilitate the setting of the shoes K, and consequently of the bars E,outward or inward to any desired extent.

The connecting-pieces E can swing around upon the pins 70, and thus thebars E can be set in various oblique positions, when desired, as in thepreparation of what are known as beveled panels for stair-work andanalogous situations. I employ exchangeable pieces G, which may beexactly similar to those described in my patent of July 12, 1870; but,instead of attachin g them to the longitudinal bars E and the cross-barsB by applying their pins m directly in holes in said bars, I match thepin m into hinged parts T on adjustable pieces R S, supported on thebars. The adjustable pieces are of two kinds. One set, R, is matched onthe cross-pieces B, and confined by means of the T- section grooves band pinchingscrews 4. Another set, S, of the adjustable pieces arematched on the higher longitudinal bars E, and secured by means ofpinching-screws 8. They hold the adjustable pieces G at a level belowthemselves, while the other set of lower adjustable pieces, It, holdtheir pieces G at a level a little above themselves. The result is theholding of the pieces G in any position required on either the bars B orthe bars E, and at practically the same level.

When it is desired to remove the pieces G, they may be removed bydisconnecting the pins m from the hinged parts T on the respectiveadjustable pieces; but I prefer, when the removal is to be only for amoment-as, for eX ample, to allow the cutting-tool to run once around,guided by the bars D and E alone to simply turn up the several pieces Gout of the way, by turning the hinged parts T on their hinges, to removeor restore the pieces G. The change can thus be made instantaneously,while disconnecting, and especially again connecting, the pin m (whenthe fit is close) requires time'and labor.

I press the wood H which is to be treated firmly against the lower facesof the cross-bars E by means of clamping-bars I, which are guided attheir ends in vertical "grooves in the inner sides of the adjustableposts B. J J are links pivoted on the sides of the clamps I, andconnecting them with nut-pieces P, which receive the threads of thescrew 0. The thread of each of these screws is right-handed where itpasses through one of the nuts P, and lefthanded where it passes throughthe other. By turning the screw 0 in one direction, the

links J J are brought into a nearly upright position and the clamp I iselevated, while the opposite direction spreads them apart and lowers theclamp to liberate the wood. The under sides of the nut-pieces P areadapted to bear fairly and slide easily on the table A.

In the operation of the machine, the table A is moved in one directionor the other by means of screws, or otherwise, as required, to guide theentire templet and the wood clamped therewith in the proper positions,guided by the traverse of the cutter, or of a roller thereon, (notrepresented,) against the interior working-surface. To panel a piece ofwainscoting or thelike, the several bars B and E are adjusted in theproper positions, and heldfirmly by the screws Z), 7c,a1'1d 0. Then anadjustable piece, R, is set, and held by the screw 1" on each cross-barB, midway between the adjustable shoes K. Then an adjustable piece, S,is placed, and held by the pinching-screw s on each of the longitudinalbars E. Other adjustable pieces, S, are set opposite the corners of thepanel, if desired, and the several exchangeable pieces G are attached bymeans of their pins m. The parts are now adjusted. A piece of plank orboard of the proper thickness is clamped under the cross-bars B byoperating the screws 0. The whole being now placed in position, and acutting-arbor being depressed, with its smooth collar or roller justtouching the inner face of either a bar, B, or E, or one of theremovable pieces G of the templet, and the attached work is traversedsmoothly around, being guided by the templet until a channel is outquite around on the surface of the wood, having a contour correspondingto the shape of the several removable pieces G and the parallelogramformed by the bars. It, now, it is desired, as is frequently the case,to succeed this movement by a plain cut with the same cutter, or adifferent cutter passed directly around the interior of theparallelogram, without the exchangeable pieces G, it is only necessaryto turn up the several pieces G with their connected hinged parts T bythe hand of the attendant, and the machine is then in adjustment fordoing so; or, if a part only are to be so removed, such part may be thusturned up, and will be ready to be instantly again turned down, aftertreating the succeeding piece.

The machine allows the same facility as my former one for the entireremoval of the pieces G and the substitution of others of larger orsmaller size, or different contour.

The operation of introducing and removing the wood may be conducted withmore facility, because there are but two screws to operate.

In the last part of the motion the links J J act togglewise, to increasethe force of the clamping.

In case the wood H chances to be thicker at one edge than another, theclamping-pieces I can tilt on the links J J to adapt themselves thereto.v

In order to reduce the waste of wood which is involved in clamping aportion under the crossbars B, I propose, in some instances, to use onlywood of the size required for the panel, and to secure it upon aseparate board, which board may then be held under the clamping-bars Bin the same manner as above described. To effect this I provide twomovable bars, which I term sub-clamps, preferably formed with fine teethon their inner faces, as indicated by D, and provide a rightand -leftscrew, a, lying in a groove in the board 0, which draws them together.The wood II being previously sawed out of a proper length, only a verylittle greater than the panel-work which is to be produced, the screw 0is turned, and the bars D set at the proper distance apart to receivethe wood. Now, the wood is laid on the board 0, and the screw is turnedin the opposite direction until the teeth of the bars D are firmlypressed into the end fibers of the wood. The bars D are pivoted upon thenuts al which take hold of the screws by means of pivots 61 so that thebars may turn as much as is required in taking hold of triangular orirregularly-shaped pieces of wood. The screw is mounted in bearings O onthe board 0, at each end of the groove. The groove is made of dovetailedsection, or T-section, and the nuts are correspondingly formed, so as tobe held firmly down in the groove.

In order to make a better bearing on the under side of the cross-bars B,I propose to introduce a strip of lumber, F, under each bar B.of athickness about equal to the thickness of the wood, H, which is beingtreated.

I can, if preferred, provide a number of such strips 1* of difi'erentthicknesses, with means for attaching them at will on the board 0.

I claim as my improvements in adjustable templets- 1. In combinationwith the adjustable bars B and adjustable bars E, crossing the former,

the adjustable pieces R and S, adapted to readapted to allow the latterto be temporarily turned up out of the way, as and for the purposesherein specified.

In testimony whereof I have hereunto set my hand this 5th day ofNovember, 1874, in the presence of two subscribing witnesses.

NICHOLAS JENKINS.

Witnesses: v

GEo. W. BADGEROW. E. T. ALLEN.

